B3.SM.000-6400 KEB
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The KEB B3.SM.000-6400 is part of the SM Synchronous Servo Motors series and offers a maximum speed of 10,000 rpm with a maximum torque of 17.71 Nm. This motor features 4 pole pairs, a rated current of 3.6 Amps, and a winding resistance of 3.9 Ohms. It operates with a duty type of S1 and a voltage constant of 80.61 Vpk per 1000 rpm.
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Product Description:
The B3.SM.000-6400 is a synchronous servo motor manufactured by KEB as part of the SM Synchronous Servo Motors series. It serves as a rotary actuator in automated machinery, supplying tightly regulated torque and velocity so motion controllers can execute accurate positioning, contouring, and speed profiles in assembly cells, conveyors, or packaging lines. Its electromagnetic design allows rapid response, making it suitable for continuous industrial service. This operating role makes the motor a practical choice for axes that need repeatable motion and stable speed control over long production cycles.
This model carries an S1 continuous duty rating of S1, meaning it can operate indefinitely at rated load without thermal interruption. The rotor can reach a mechanical limit of 10000 rpm, allowing high surface speeds for small-diameter tooling or fast linear conversion through gearing. During acceleration and dynamic moves, the drive may draw up to 24.6 A, and the peak torque delivered at that current is 17.71 Nm. Magnetic flux is produced by a rotor fitted with 4 pole pairs, which sets the electrical frequency that the inverter must synthesize for synchronous operation. These characteristics help the motor respond quickly to changing commands while maintaining smooth motion during demanding cycles.
Under steady-state conditions, the winding requires only 3.6 A, supporting continuous production while minimizing inverter loading. When the shaft is locked, the stator draws a stall current of 4.1 A to generate a holding torque of 3.22 Nm, helping prevent drift on vertical or friction-laden axes. The back-EMF constant of 80.61 Vpk/1000 rpm links speed to generated voltage, a parameter the drive uses for field-oriented control and for sizing DC-bus components. A winding inductance of 18.8 mH filters current ripple, and a resistance of 3.9 Ω sets copper losses, so thermal rise remains within insulation limits when the motor operates at its rated point. The combination of current demand, voltage behavior, and winding properties supports stable servo performance during both sustained running and rapid changes in load.
